A. Volatile substance B. Non-volatile substance C. Both A and B D. None of these
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A. Reflection B. Refraction C. Total internal reflection D. None of these
A. Equal to each other B. Not equal to each other C. Proportional to each other D. None of these
A. 1MHz B. 1.5MHz C. 20MHz D. 30MHz
A. At outer end of p-type B. At outer end of n-type C. At the p-n junction D. No where
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A. Increase B. Decrease C. Remain the same D. None of these
A. Radar B. Sonar C. Pukar D. None
A. Ground wave B. Sky wave C. Sound wave D. Light wave
A. Maximum at the higher point B. Minimum at the highest point C. Same at all point D. None of these